Custom sub box build.

saitrix

saitrix

saitrix

Soldato
Joined
2 Jun 2003
Posts
8,950
Location
Nottingham
Well I have decided I will make myself a custom sub box so my new sub keeps my boot as usable as possible. I know Tesla asked me to get pics for it so I decided to make a thread.

So far the total cost is £31 for all the stuff I need to build it. Though I think I went a little over the top on the contact adhesive, I bought 1L of the stuff. :p

Used 18mm MDF for this to make sure that it does not deform at all when my sub is going, makes it a bit heavy but it certainly feels strong enough!

Here are a few pics of what I have done so far.

sub1.jpg


sub2.jpg


sub3.jpg


sub4.jpg
 
Nice, but I will hopefully will have more boot space by the end! :p The 12" hole was hard to do by hand with a jigsaw. Hard to get it real neat.
 
dale1uk said:
Just out of interest, did you make it to the right size?? By that I don't mean the correct size that it will fit in the boot, but regarding the volume of the box?? Different subs need to be in different boxs due to the volume of air they are designed to push, same as some subs are designed to work in ported boxs and some sealed. A lot of people overlook this when building custom boxes, and it can result performing quite as good as it would in the correct box.
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It needs to be 1cu.ft for the 12" 1202 JBL sub. That is including the volume the sub itself takes, the design itself comes out at 0.98cu.ft from my calculations, yes I remembered to take off the thickness of the MDF. :p
 
I put a bead of silicone sealant around the edge of the wood that is on show in the first pic. As I screwed it tightly down this forced it out of the sides and make an air tight gap and meant I didn't have to apply the sealer through the small hole. Just a little tip.
 
Matt82 said:
silicon sealant is bad for sub boxes. it releases aceatic acid (cant remember how its spelt) which dissolves the rubber suspension on the sub.

youre best of sealing the box with watered down glue (the white paper glue you used in junior school, which i cannot remember the name of!)
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Ahh lucky I didn't use silicone sealant in the end! I use some kitchen abd bathroom flexible sealant that is acrylic based. So shouldn't have the same fumes. :)

Sub box all finished now, just didn't get a chance to take any pics. Monday will be the next day I can work on it, I will be adding the handles over the sub then and also making the board for the amp to go on, on the other side of the boot.
 
Well here is an update from today, just went out and took pics so sorry if you can't see that much!

I put the carpet on, damn I shouldn't have gone for the high quality carpet! Way too thick to cut easily, so not as neat as I could have.

Just need to make the amp board now and put the grill over the sub. Want to get this done before going back to uni, too hard to do it in the hall's car park.

Damn the flash shows up the joins!

sub5.jpg


sub6.jpg
 
agw_01 said:
That looks excellent :) Nice snug fit.

Is that a 75.4? Looks pretty big.
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Yup it is a 75.4. :) That is powering my front Alpine componant speakers. Will be much nicer when the wires are all neatened.
 
Firestar_3x said:
Shame about the edges, all the sub box felt i've ever used is designed to go aorund the edges without being cut, this stuff mega thick?
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No way you could bend it round, it was able to hold itself level when dangled over an edge. That looks much worse in the pics than it is in real life. Another thing I might do is just paint that black rubber to grey with a little paint, shouldn't be too hard.
 
whitecrook said:
Get some fabric beading and stitch it onto the joins, should look really professional then.
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I'm not 100% sure what you mean by that, Got any pics or just a description what it is?
 
Lol I could always get my mum to stitch it! I wonder how I will attatch it to my corners, will have to try it with some of the stuff my mum already has...
 
Well the amp board is nearly all done. Only got a few hours of work in today, so just need to finish off the fixings for it and then put the sub grill on. Then it will be finished ready for going back to uni! :D I'll get pics tomorrow hopefully.
 
ScoobyDoo69 said:
how is the sub box held in?
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It has velcro to keep the position. Then for proper support it is tied to the rear seat support bar and also tied to another brace on the side of the boot.
 
Right guys, it's finally finished! :D Happy with how it has turned out, it has given me so much more space. The handles look really good in my opinion, better than I expected, can't complain for £8.

Just to let you know, the overall cost came to £35, about what I expected it to be.

sub7uj0.jpg


sub8ui1.jpg


sub9mu5.jpg
 
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